Process of replacing broken or molten holding wires inside of incandescent electric lamps



26 1927. 1,637, July v F. VOGLHUT PROCESS OF REPLACING BROKEN OR MQLTEN HOLDING WIRES INSIDE OF INCANDESCENT ELECTRIC LAMPS Filed Sept. 17. 1925 Patented July 26 1927.

. UNITED STATES PATENT-OFFICE.

FRANZ VQGLHU'I, OF AUGSBURG, GERMANY.

PROCESS OF REPLACING BROKEN OR MOLTEN HOLDING WIRES INSIDE OF INCLIN- DESCENT ELECTRIC LAMPS.

Application filed September 17, 1925, Serial No. 56,842, and in Germany October 11, 1924.

My invention relates to a method of replacing broken or molten holding Wires in an anchoring button disposed interiorly of an electric incandescent bulb, and it has particular relation to the efl'ecting of such replacement whereby the defects heretofore present in such an operation are eliminated.

The present method of replacin such broken or molten wires inside an lectri'c light bulb consists in forming an opening at substantially the lowest point of the bulb and in axial alignment with the electric button, then projecting a flame through'said opening from the outside of the bulb onto the glass button in which it is desired to anchor the new holding wires, and thereafter passing the new wires through the opening y means of pincers, or otherwise, and fixing them in the softened glass-bulb. Several defects are present in the practice of such a method, and it is the purpose of my invention to overcome and eliminate these defects.

As a matter of fact, so far as'my observation is concerned, the-above method is productive of so many disadvantages that the art of replacing broken holding wireshas not progressed to any substantial extent from a commercial point of view, and lamps which would otherwise be easily repaired must be entirely discarded. In the first place, the projection of a flame throu h the lower opening very frequently resu ts in cracking the lamp bulb by reason of the great heat radiated bysaid'flame, and such cracking of course renders the bulb entirely useless. Moreover, when the flame is thus projected through the opening in an axial direction and the new wires are passed through the opening in proximity to the 40 flame, these wires are immediately oxidized and rendered useless.

My process, therefore, contemplates a method of softening the glass button in which the wires are to be positioned, by projecting a flame upon said button at right angles to the longitudinal axis of the lamp bulb, thereby preventing the heat from affecting any other portions of the glass structure of the bulb.

so In practicing this method it is necessary that the flame projecting element be passed into the interior of the bulb to permit the flame to impinge on the button normally of the axis. The use of the flame on the interior of the bulb introduces another difliis arranged to supply air to the flame, the

culty in that theair within the bulb is almost immediately consumed, and it is therefore necessary to supply a further medium for maintaining the aforesaid flame. Moreover, when the flame is thus directed from the interior of the bulb and normally to the button, the new wires may be passed through the lower opening without bringing them into oxidizing proximity with the flame.

As will be hereinafter pointed out more in detail, the above method permits of the fixation of new holding Wires in a button which is softened byheat without encountering the defects heretofore present when such re-' placement has been attempted. 7

The accompanying drawing comprises a single figure whereby my improved method of operation may be practiced and illustrated somewhat diagrammatically a lamp bulb which has been opened at its lowermost point and in axial alignment with the holding button, the elements whereby my method is practiced being shown in working posi-' tion. I

1 Referring now to the drawing, a represents a lamp bulb, and]; a tube through which fuel such as illuminating gas, electrically heated air, etc., may be fed as it is passed into the interior of the lamp. The pointed flame c, from the tube 1), is projected on a glass button (1 at right angles to the axis of the lamp, and, since, as heretofore indicated, it is necessary to provide exterior maintenance of the flame c, a fuel tube 6' said tube e also passing through the openin at the lowermost portion of the lamp, whic opening is designated by f. 9 represents pincers, or other workingtools, for grasping the holdin wires h andinserting them in 95. the glass utton after the same has been softened.

I My improved method consists, therefore, of passing a flame propagating member through an opening in the bulb and causin a flame to impinge upon a button in sue -manner as to not aflect any portions of the bulb other than said button. It will moreover be apparent that when an operation is' performed in the manner-contemplated by 106 my invention, the holding wires may be passed through the opening and into the softenedglass button without their being 1 brought into oxidation relation, with the high temperature flame c. 110

While I have above described enerally my method of carrying out the replacement of holding wires, it is obvious t at other modifications thereof may occur to those skilled in the art whereby equivalent advantages are realized, and moreover, that these modifications will not depart from the spirit of the present disclosure, and therefore, I desire that my invention be limited only by the showing of the prior art and the scope of the appended cla1ms.

I claim: I 1. The method of replacing holding wires in the glass button of an incandescent lamp comprising a bulb having a lower anchoring glass button and a similar up r button positioned interiorly thereof, said buttons being arranged on the longitudinal axis of the lamp line with said axis, and directing a flame upon a button at ri ht angles to said axis.

2. The method of replacing holding wires in the glass button of an incandescent lamp 5 comprising a bulb having a lower anchoring glass button and a similar upper button positioned interiorly thereof, said buttons being arranged on the longitudinal axis of the lamp bulb, which consists in opening said so bulbat substantially its lowest oint and. in

line with said axis, directing a ame upon a button at right angles to said axis, and thereafter securing a wire in said latter button without passin said wire into oxidizing relation with said ame. v

'3. The method of replacing holding wires in the glass button of an incandescent lamp comprising a, bulb having a lower anchoring glass button and a similar upper button 0- sitioned interiorly thereof, said buttons ebulb, which oonsists'in opening said 2 bulb at substantially its lowest pointand in through said opening, and thereafter securing a wire in said latter button without passing said wire into oxidizing relation with said flame.

4. The method of replacing the holding wires in the glass buttons on the stems of incandescent lamp bulbs, which stems extend longitudinally interiorly of said bulbs, which consists in passing a flame propagating element through an opening at the lowest point in said bulb and directing the flame therefrom on a glass button in a direction perpendicular of the axis of said lamp bulb.

5. The method of replacing the holding wires in the glass buttons on the stems of incandescent lamp bulbs, which stems extend longitudinally interiorly of said bulbs, which consists in passing a blow pipe through an opening in 'the lowest part of said bulb, directing the flame therefrom on a button in a direction nonparallel to the longitudinal axis of said bulb, maintaining said flame by a medium likewise supplied through said opening, and thereafter inserting a wire through said opening and intothe softened button without bringing said wire into oxidizing relation to said flame.

6. The method of replacing the holding wires in the glass buttons on the stems of incandescent lamp bulbs, which stems extend longitudinally interiorly of said bulbs,

which consists in passing a blow pipe through an opening in the lowest part of said bulb and directing the flame therefrom on a button in a direction perpendicular to the axis of said bulb thereby preventing the heat from affecting the other button or other easily breakable portions of the lamp, passing an air supply through said opening and into proximity to said flame to maintain the latter, and passing a wire through said opening and fixing the same in said flame treated button.

In testimony whereof I ailix my signature.

FRANZ VOGLHUT. 

